Purpose: “In Order To” use together with an infinitive
Estudio para sacar buenas notas.
Effect: effect that something has on something else
Voy a la Universidad para ser professor.
Recipient: the person or entity that receives something
Este regalo es para ti.
Future: dates, deadlines, or events
Esta tarea es para mañana para el lunes.
Employment
Trabajo para un restaurant chileno.
Comparison
Para un niño de cinco años, lee y escribe muy bien.
Toward a place
Camina para el parquet.
Por: ATRACTED
Around a place
¿Hay un banco por aquí?
Through a place
Paso por el parquet todos los días.
Reason
¿Por qué llegaste tarde? ¡Por el tráfico!
After: as in “Going To Get Something”; usually used after “ir”
Voy al supermarcado por pan y leche
Cost
Pagué 20 eos por esta chaqueta.
Thanks: use “por” after “gracias”
Gracias por la ayuda.
Exchange
Quiero cambiar estos zapatos rojos por esas negros.
Duration
He vivido aquí por más de diez años.
Por and Para both mean "for." However, you must use the right one by using the rules of por and para....
POR means for, but can also be a preposition and has alot of uses:
Rule: to express gratitude or apology Model: Gracias por la ayuda.(Thanks for the help.)
Rule: for multiplication and division Model: Dos por dos son cuatro.(Two times two equals four.)
Rule: for velocity, frequency and proportion Model: Voy al restaurante cinco veces por semana.(I go to the restaurant five times per week.)
Rule: meaning "through," "along," "by" or "in the area of" Model: Andamos por el parque.(We walk through the park.)
Rule: when talking about exchange, including sales Model: Él me dio diez dólares por el libro.(He gave me ten dollars for the book.)
Rule: to mean "on behalf of," or "in favor of," Model: No voté por nadie.(I didn't vote for anyone.)
Rule: to express a length of time Model: Yo estudié por dos horas.(I studied for two hours.)
Rule: to express an undetermined, or general time, meaning "during" Model: Se puede ver las estrellas por la noche.(One can see the stars during the night.)
Rule: for means of communication or transportation Model: Prefiero viajar por tren y hablar por teléfono.(I prefer to travel by train and speak by phone.)
Rule: in cases of mistaken identity, or meaning "to be seen as" Model: Me tienen por loco.(They take me for crazy.)
Rule: to show the reason for an errand (with ir, venir, pasar, mandar, volver, and preguntar) Model: Paso por ti a las ocho.(I'll come by for you at eight o'clock.)
Rule: when followed by an infinitive, to express an action that remains to be completed, use por + infinitive Model: La cena está por cocinar.(Dinner has yet to be cooked.)
Rule: to express cause or reason Model: El hombre murió por falta de agua.The man died for lack of water.
Rule: "estar por" means to be in the mood, or inclined to do something Model: Estoy por tomar café.(I'm in the mood for drinking coffee.)
Rule: in passive constructions Model: El libro fue escrito por Octavio Paz.(The book was written by Octavio Paz.)
PARA means "in contrast" and has less meanings:
Rule: to indicate destination Model: El hombre salió para Madrid.(The man left for Madrid.)
Rule: to show the use or purpose of a thing Model: El vaso es para agua.(The glass is for water.)
Rule: to mean "in order to" or "for the purpose of" Model: Para hacer una paella, primero dore las carnes.To make a paella, first sauté the meats.
Rule: to indicate a recipient Model: Este regalo es para ti.(This gift is for you.)
Rule: to express a deadline or specific time Model: Necesito el vestido para el lunes.(I need the dress by Monday.)
Rule: to express a contrast from what is expected Model: Para un niño lee muy bien.(For a child, he reads very well.)
Rule: "estar para" to express an action that will soon be completed Model: El tren está para salir.(The train is about to leave.)
RULES AND EXAMPLES
POR VS PARA
Para: PERFECT
Por: ATRACTED
Por and Para both mean "for." However, you must use the right one by using the rules of por and para....
POR means for, but can also be a preposition and has alot of uses:
Rule: to express gratitude or apology
Model: Gracias por la ayuda.(Thanks for the help.)
Rule: for multiplication and division
Model: Dos por dos son cuatro.(Two times two equals four.)
Rule: for velocity, frequency and proportion
Model: Voy al restaurante cinco veces por semana.(I go to the restaurant five times per week.)
Rule: meaning "through," "along," "by" or "in the area of"
Model: Andamos por el parque.(We walk through the park.)
Rule: when talking about exchange, including sales
Model: Él me dio diez dólares por el libro.(He gave me ten dollars for the book.)
Rule: to mean "on behalf of," or "in favor of,"
Model: No voté por nadie.(I didn't vote for anyone.)
Rule: to express a length of time
Model: Yo estudié por dos horas.(I studied for two hours.)
Rule: to express an undetermined, or general time, meaning "during"
Model: Se puede ver las estrellas por la noche.(One can see the stars during the night.)
Rule: for means of communication or transportation
Model: Prefiero viajar por tren y hablar por teléfono.(I prefer to travel by train and speak by phone.)
Rule: in cases of mistaken identity, or meaning "to be seen as"
Model: Me tienen por loco.(They take me for crazy.)
Rule: to show the reason for an errand (with ir, venir, pasar, mandar, volver, and preguntar)
Model: Paso por ti a las ocho.(I'll come by for you at eight o'clock.)
Rule: when followed by an infinitive, to express an action that remains to be completed, use por + infinitive
Model: La cena está por cocinar.(Dinner has yet to be cooked.)
Rule: to express cause or reason
Model: El hombre murió por falta de agua.The man died for lack of water.
Rule: "estar por" means to be in the mood, or inclined to do something
Model: Estoy por tomar café.(I'm in the mood for drinking coffee.)
Rule: in passive constructions
Model: El libro fue escrito por Octavio Paz.(The book was written by Octavio Paz.)
PARA means "in contrast" and has less meanings:
Rule: to indicate destination
Model: El hombre salió para Madrid.(The man left for Madrid.)
Rule: to show the use or purpose of a thing
Model: El vaso es para agua.(The glass is for water.)
Rule: to mean "in order to" or "for the purpose of"
Model: Para hacer una paella, primero dore las carnes.To make a paella, first sauté the meats.
Rule: to indicate a recipient
Model: Este regalo es para ti.(This gift is for you.)
Rule: to express a deadline or specific time
Model: Necesito el vestido para el lunes.(I need the dress by Monday.)
Rule: to express a contrast from what is expected
Model: Para un niño lee muy bien.(For a child, he reads very well.)
Rule: "estar para" to express an action that will soon be completed
Model: El tren está para salir.(The train is about to leave.)
found on:
http://www.studyspanish.com/lessons/porpara.htmb
Pracice Quizes:
http://www.123teachme.com/spanish_sentence_quiz/category/por_vs_para_1
http://www.quia.com/rr/405736.html
http://www.studyspanish.com/practice/porpara.htm
Extra Links for Extra Help:
http://www.enforex.com/language/por-para.html
http://www.lingolex.com/swom/wom-porpara.htm
http://legacy.lclark.edu/~benenati/porpara/porpara.html
For more awesomely awesome awesomeness go here! :)
http://www.studyspanish.com/practice/porpara.htm